Smoking pipe



July 11, 1944.

F. TOPP SMOKING PIPE Original Filed Feb. 10, 1941 INVENTOR.

Reissued July 11, 1944 Re. 22,516Y

UNITED STATES PATENT OFFICE Fred Jllgd, Ohio Original No. 2,309,482,dated-January 26, 1943,

Serial No. 378,142, February 10, 1941. Application for reissue May 3,1943, Serial No.

i Claims.

This invention relates to smoking pipes. More particularly, it relatesto means for preventing the accumulation of tobacco condensates in thepipe by vaporizingthem and venting the vapors into the outside air.

While it has been proposed heretofore to use some absorbent material forgathering to itself 'liquids which accumulate in the bottom of the bowland in the stem of a pipe during smoking, no provision has been made forthe removal of the liquids from the absorbent material. On the contrary,the theory of such pipes is that when ther absorbent material has becomesaturated with such liquids, the absorbent material will be ,removedfrom the pipe and discarded, its place being taken by clean absorbentmaterial. While lthis arrangement is very helpful in preventingundesirable liquids from reaching the mouth of the smoker, the absorbentmaterial must constantly be changed. Moreover, a iilter which is soakedwith tobacco yellow is not effectivein removing bitterness from thesmoke being carried to the mouth.

Accordingly, the first object of this invention is to provide a meansfor collecting smoking pipe liquids in absorbent 'materiaL vaporizingthe liquids, and venting the vapors to the atmosphere. One of thefeatures of this invention is ,the provision of a'recess in the bottomof a pipe adjacent to the bowl and a portion of the smoke duct, whichrecess is llled with absorbent maF terial` and then closed by aforaminous plate. vThe ends of the recess are connected to thebottom-'of the pipe bowl and to the smoke duct so that any liquids inthe smoke duct or pipe bowl will bediverted to the recess. The liquidsaccumulatedin the absorbent material commence to vaporize when the pipebecomes warm and the ;vapor es-capes through the foram'inous plate intothe atmosphere. l

Another object of this invention is to assist .this vaporization of theundesirable liquids in `the absorbent ymaterial by providing a heaterlelement capable of establishing heat conductive relationship betweenthe high heat inside the tobacco bowl and the absorbent material. Inorder to effect this purpose, applicant positions a, strip of heatconductive material in such la way that oneend is within the pipe bowland the other endv is within .the recess in which is disposed theabsorbent material. By this arrangement the absorbent material ismaintained .at acomparatively high temperature sothat it :ispossible tovaporize the liquids 'or to maintain (c1. iai-215) highly moistvaporreceived by thepipe vasa vapor anddischarge it into the atmosphere.t These and such other objects as may hereinafter appear are obtained inone embodiment of I this invention shown inthe drawing, wherein:

Figure l is a plan view of a pipe showing applicants heater element inthe bowl thereof;

Figure 2 is a bottom view of a pipe showing the foraminous plate;

Figure 3 is a view in section taken alongthe line 3-3 of Figure 1,showing the relationship of the heater element, the-absorbenty materialand the foraminous plate; z

Figure 4 is a transverse section of the-pipe taken on a linerlooking inthe direction of 4-,-4 of Figure 3;

Figure 5 is a transverse section of the pipe taken on a line looking inthe direction of V5--f5 ofFigure 3;

Figure 6 is a view in section of a second embodiment of applicantsinvention; and

Figure 7 is a view taken on the line 1-1 of Figure 6.

Continuing to refer to the drawing and particularly to Figure 3, thereis shown a conventional pipe comprising a bowl member lll havingintegral therewith a short lstem section I2 in which is mounted by anysuitable means a stem I4 having a bit I6. A smoke ductv I8 in the stemportion I2 and a smoke duct 2l) in the stem I4 provide a smokepassageway from the bowl I0 to the bit IE. v

The vmeans for absorbing and vaporizing undesirable liquids are disposedin a recess 22, which as may be seen in Figurev 5 is rectangular incross-section. Along lower edges of the recess and out into the walls ofthestem portion-l2 are two channels 24 and 26 which, referring to Figure5, have their ends 28 and 30, see'Figure 2, open so that a strip offoraminous metal which may be referred to asl a vent plate 32 may beslipped into the channels 24 and 2B so as to close the bottom of therecess 22. Referring to Figures 2 and 3, the outer end of the vent plate32 has a downwardly turned end portion 34 which provides gripping meansfor the insertion or withdrawal of the vent plate 32 from thechannelsVliquids entering the pipe whether they come from the bowl or from thestem.

By the arrangement shown, assuming that a heater element 42 is notemployed, applicants pipe will cause to drain into the absorbentmaterial 4U all liquids and due to the heat in the base of the bowlthese liquids will have a tendency to vaporize and discharge through theholes in the vent plate 32.

In order to further assist such vaporization,

applicant provides a heater element 42 which comprises an enlarged heatabsorbing endl` por-rI tion 4G positioned in the base of the. bowl` l0,with a long extending heat dissipation end 45 positioned between the topo f the recess 22; and

walls E2 and 54, see Figure '7, which frictionally engage the walls ofthe recess 56. It will be observed that in this embodiment of theinvention shown in Figure 6 the metallic wall insert 50 and the heaterelement itself becomes a permanent part of the pipe and is notremovable. Under these circumstances it has been found desirable todrain condensates from the bowl to the absor-bent material 58 through aduct 66 from the smoke duct 68. In this embodiment of the pipe, ametallic cooling element 10 comprising a sleeve is disposed 'between thestem the absorbent material 46'., A hole 4.6 through` l the heaterelement 42 permits liquids collecting at the bottom of the pipe to reachthe absorbent material 40. The heat absorbing end 44 of the heatingelement 42 may be of various congurations. In order to assist in thevcleaning of the recessy 22' andlof.` the; bowl lil, it is desirable thatthe heating element` 412 be removable either by drawing the heatabsorption end` 44 downwardly through the-recess 22 orA by drawing theheat dissipationy end- 44.' upwardly out through the bowl I0. As shownlin Figurey 3, the heat absorp tion. endY #Lhasa configuration such thatit may be drawn downwardly throughV the hole 36.

In practice, the absorbent material-40 is not loose, asL shown in Figure5, but is in the form of av stripof absorbent paper, commonly called anabsorbent cartridge, Whichrnayy be removed asa unit. Theibresof theabsorbent cartridge are-tightly packed so as not tor permit the Ventplate 32 to impair the draw of the pipe. The heater element 41 is notfastened intolthe recess 22vk but issimply. held there byy the combinedac' tion of the absorbent cartridge and the vent plate 32.

The advantagesof this smoking pipe are evident. When inuse, liquidswhether they, be condensates in the pipe bowl or from the mouth will bedivertedy by the opening 35 and the passageway 381- to the absorbentmaterial 4D; Thismaterial Willi become quitek hot due to the action of.-the` heating element 42. This heating element-may beV varied in size tosuit, requinementsxbut., the embodiment shown, in Figures 3; 4i and 5,functionssatisfactorily.

Iniuse, the absor-bentmaterial 4D. does not become wet to nearly thesame degree as absorbent iltersv whichy are fully enclosed in; the stem.The recess212, does not become lled with water, on the contrary theliquids.. seem to be continuouslyv discharged` into the atmosphere andonly the nonvolatile. ingredients of the liquids remain; in theabsorbent material. The absorbent materialbeccmescaked with a yellowsubstance which isthc non-volatile portions of these tobaccocondensates.

.Another embodiment ofY applicants invention is presented in Figure 6.In this embodiment, the comparatively small4 heat absorbing end portionMlv of the heating element 42, see Figure 3, is replaced by a; metallicwall insert 5|),r see FigureY 6, whichisconnected to a, heater element`52 by any suitable means such as a rivet 5 4. The heatery element 52is, positioned inl a recess 56 of aV sizev suiicient to hold absorbentmaterialk 58 held therein byv a foraminous plate 60. The foraminousplate 60 may be held in position by means of the same construction shownin Figures 2, and 3 for` the plate 32, or

it may bey ofr a channel COIlStructon having sirio portion of the pipeitself and a bit member 12. Communications between the open chamber 14creatodi by this. Hmetallic cooling element 'l0 and the absorbent`material `58 is obtained by means ofthe duct 'L6- A. cooling chamber 'I4may be considered as a. part of the main bore or passageway from thebore to the mouthpiece.

The embodiment shown in Figure 6 is called a preferred embodiment inthat experiment shows that it hasV greatk capacity to vaporize liquidsaccumulating in the absorbent paper 58.

Having thus described' my invention, whaty I claim as new and desire to.secure by Letters Patent of' the United States is:

1. A smoking pipe comprising `a unitary bowl and shank` and amouthpiece, a lower portion of the bowl and shank respectively eachhaving a recess .coaxially arranged and forming ak chan nel closed atits ends, a borev extending from the bowl towards the mouthpiece, `acooling chamber between the shank and the mouthpiece, an in:- termediateportion of the space of the channel havingk vertical communication withthe bore and the end of the channel towards the mouthpiece havingcommunication with the cooling Chamber, metallic means positioned in thecavity of the bowl and running lengthwise of the channel, removableabsorbent withi'n the channel in con.- tact with the metallic means anda removable metallic channel member constituting a, part, of the bottomof the bowl and shank and; having its opposite walls in contact withthe` first metallic means, said metallic channel member having vents inthebottom. portion thereof.

2. A smoking pipe comprising a unitary bowl and shank and a mouthpiece,a lower portion of the bowl and shank respectively each having a recess.coaxially. arranged andv forming a channel closed. at its ends, a boreextending from the bowl to the mouthpiece, the bowl end of the channelhaving communication with the bowl andthe mouthpiece end of the channelhaving communication with, theV bore, metallic means positioned in thecavity, of the bowl and in the channel; said metallicv means in the*channel ex;- tending substantially to the point of communi cation. ofthe channel, with` the mouthpieceend of the bore, a removable absorbentywithin the channel in Contact with.tbennetallic` means, and a removablemetallic member. constituting a part of the bottom of the bowl and shankandhaving vents4 thereinv between the channel and theatmosphere.4

3. Al smoking pipe comprising a bowl and shank and a mouthpiecqalowerportion of the bowl and shankrespectively having a recess coaxiallyarranged and, forming a channel closed at its ends; a main boreextending from the bowl towards the mouthpiece, means communicatingwithsaid bore to cause a current of air to pass through said channel inthe direction of the mouthpiece When 'ther pipe is smoked, metallicmeansV positioned in the cavity of' the' bowl and in the channel, saidmetallic means in the channel extending lengthwise towards themouthpiece end of the channel, a removable absorbent within the channelin contact with the metallic means and a removable metallic memberconstituting a part of the bottom of the bowl and shank, said metallicmember having vents in the bottom portion thereof.

4. A smoking pipe comprising a bowl and shank and a mouthpiece, a lowerportion of the bowl and shank respectively having a recess coaxiallyarranged and forming a channel open at the bottom, a removable closuremember for the bottom of said channel provided with openings thereinforming vents between the channel and the atmosphere, a removableabsorbent material substantially lling said channel, heat conductingmetallic means positioned in the tobacco holding cavity of the bowl andrunning lengthwise of said channel substantially in Contact with saidabsorbent material, a main bore extending from the bowl to themouthpiece independently of said channel to permit a main current of airto pass through the cavity of the bowl, the main bore and themouthpiece, and means to enable a 25 the channel, one of saidpassageways being dis- 30 posed near the mouthpiece end of the channeland the other being disposed near the bowl end of the channel, saidpassageways being in communication with the main current of air passingthrough the cavity of the bowl, the main bore and the mouthpiece.

5. A smoking pipe comprising a bowl and shank and a mouthpiece, a lowerportion of the exterior of the bowl having a recess forming a channelopen at the bottom, a removable closure member for the bottom of saidchannel provided with openings therein forming vents between the channeland the atmosphere, a removable absorbent material substantially fillingsaid channel, a main bore extending from the bowl to the mouthpieceindependently of said channel to permit a main current of air to passthrough the cavity of the bowl, the main bore and the mouthpiece, andmeans to enable a current of air to pass through said channel in thedirection of the mouthpiece when the pipe is smoked, said meanscomprising a plurality of passageways communicating with the space ofthe channel, one of said passageways being disposed near the mouthpieceend of the channel and the other being disposed near the bowl end of thechannel, said passageways being in communication with the main currentof air passing through the cavitSr of the bowl, the main bore and themouthpiece.

FRED J. TOPP.

